APRIL 1945. AS THE WAR IN EUROPE SHUDDERS TO A HALT AND GERMANY LIES IN RUINS, HITLER LAUNCHES A LAST STRIKE AT THE HEART OF AMERICA… YOUR BROTHER IS ALIVE… German engineering corps major Alex Winter is desperately constructing a pontoon bridge as the defeated Wehrmacht fights a rearguard action against the rapidly advancing Russians when he is summoned to Hitler's bunker in Berlin. His identical brother, Max, did not die in an accident at sea in 1938 but was given a new identity by his Nazi controllers and is working as a nuclear physicist on the Manhattan Project in Los Alamos, New Mexico, where the world's first atomic bomb is about to be tested. Surgically separated at birth but sharing a special bond, the young brothers were subjected to a series of mind-control experiments by their fanatical Nazi parents with only Max, the weaker one, being found suitable. With the dying days of the Third Reich approaching, Hitler orders Max to activate the model version of the weapon he had secretly been working on: his final revenge. But there's a problem. Max is refusing to respond, blocking with the word "Ivan" when his controller, a New-York-based psychiatrist, gives the command. Does the answer lie in a secret pact between the twins? Winter refuses to help but the Nazis have powerful tools of persuasion and within hours, he finds himself on a U-boat and heading for the USA and Los Alamos in the company of a sinister SS Colonel, soon to face the brother he never wanted to see again, for there is unfinished business between the brothers and when the woman they both loved suddenly appears, old wounds are re-opened and the body count starts mounting as events roll on to a terrifying climax.